REPAIR /MAINT TO HANGER AND HANGAR DOOR INCLUDING PAINTING UNDER GE AF TECH AREA

Dismantling of plain or corrugated steel/AC/Fiber sheeting any gauge, thickness of roof coverings complete all as specified and directed.

Dismantling of wrought iron or mild steel of any description and at any position not otherwise provided for complete all as specified and directed.

S&F for mild steel angle iron, cut to shape as directed, drilling holes, notching for wire as in wind ties for roof including securing bolts etc including all necessary cutting and welding for similar work upto any ht of bldg complete all as specified and directed.

S&F for rolled mild steel framed work as in doors or gates/rumblar/truss of angle or other section with gusset plate, rails, bracess etc, drilling for fixing of steel sheets or other covering including distance pieces work confirming to Fe-410-W (Gde -E-250) quality A complete all as specified and as directed.

S&F for pre-painted galvalume aluminium zinc coating GI based corrugated steel colour sheet of 0.50mm thick having tensile strength of 550 Mpa (150Gsm) as in roof covering/cladding to wall upto 25 mtr ht of bldg, fixed with self tapping screws complete all as specified and as directed.

S&F for pre-painted galvalume aluminum zinc coating GI based Plain steel colour sheet of 0.50mm thick having tensile strength of 550 Mpa (150Gsm) as in roof covering ridge/velly gutturs upto 25 mtr ht of bldg etc, fixed with self tapping screws complete all as specified and as directed.

Preparation of new iron or steel surfaces of any description, over 10cm in width or girth, when unconnected with other painting or when painted in a different tint and applying two coats of synthetic enamel paint over a coat of red oxide primer complete all as specified and as directed.

M&L for securing or easing with cleaning/greasing/oiling/ overhauling/welding in gear box, crank handle, rolling spring, channels, ball bearing, pully,Gate wheels, adjustment of lock device etc & any description complete including repair/maint of hangar door all as specified and directed. Note :- (a) Damages if any, caused due to poor workmanship shall be made good by the contractor at his own cost to match with the existing complete without any extra cost to the department.

Taking down existing door frame/ shutters of area exc 60 Sqm and n.exc 80 Sqm by hydraulic/ mechanical cranes, other tools & plant, necessary scaffolding required for lowering down the shutters carefully without causing damage to other components of hangars for repairing work and re-fixing the door shutters in same position after necessary repairs complete all as specified and as directed. Note :- (a) Damages if any, caused due to poor workmanship shall be made good by the contractor at his own cost to match with the existing complete without any extra cost to the department. (b) Spare parts shall be measured and paid seperately under relevant items

S&F for top wheel made up of taplon/ cast iron wheel including fixing only of ball bearings 02 Nos circlips, 01 No shaft of dia 25mmx120mm long or size as per required at site, including necessry welding, drilling and other fittings etc complete and all as specified and as directed.

S&F for Ball bearing roller of size 100x60mm or size as per site requirement complete all as specified and as directed.

Demolition of cement concrete (unreinforced) of any description and any position not otherwise speciafically provided for including removal of debris ouside of MOD land complete all as specified and as directed.

Supply and laying 10mm thick sand cushioning with clean river sand duly clear of residual, organic and deleterious materials spread evenly to uniform thickness laid over DLC layer complete all as specified and as directed. (No additionaI amount to be paid for overlap)

Supplying and laying 400 micron thick HDPE sheet (Virgin Quality) water proof, wrinkle free without puncture having minimum weight 390gm/sqm above tack coat & sand cushion as specified in the design with overlap between adjacent strips and at transverse joints as minimum 300mm complete all as specified and as directed.

M&L for Pavement quality concrete (PQC) of minimum 28 days field Flexural strength of 45Kg/ Sqcm or 4.5 Mpa, aggregate gradation as per Table 3 of IRC 15 2017, coarse aggregate of clean, hard, strong, dense on-porous and durable pieces of crushed stone or gravel, fine aggregates of clean natural sand or crushed stone sand or combination of both using minimum 360 kg/cum of cement with non-circular virgin synthetic fibre of 12-18 mm length, specific gravity 1.34 to 1.39, UV stable, alkali resistant, with equivalent dia 15-40 micron, minimum melting temperature as 240°C and minimum tensile strength of 300 Mpa and at the rate as specified by the manufacturer. PQC laid, spread and compacted with slip-form paver of minimum 7.50m width, including curing and tining by Texturing cum Curing Machine complete all as specified and directed. Required surface texturing to be done as specified in Clause - 10 1 14 and Table~ 9 of IRC' 15-2017 Note: Non circular/triangular fiber to be measures and paid separately at supply only rate

Supply only polyester non circular/trangular fiber 12mm long with circum circle dia meter 30-35 micron designed for melting point of 240 to 250 degree centigrade and having specific gravity of 1.34 to 1.4 complete all as specified and as directed.

M&L for Forming 25 mm width expansion joint in concrete slab for full depth of PQC. Early entry saw and subsequent cutting by using diamond bit cutter of appropriate size. straight and smooth edges. Join cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil, vegetation and other debris. The joint then filled with pre-molded 25 mm thick compressible polyethylene closed cell type filler board as specified thereafter application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the backup rod and pouring the sealant placing of closed cell medium density, crossed linked polyethylene foam backup rod of 30 mm dia, over filler board and filled with polyurethane based sealant complying with BS- 5212, BS 4254 and EN-141875-2003 with minimum movement accommodation factor (MAF) of+/- 30% having minimum 10 year performance guarantee applying masked tape on the edges of joints and removing the masking tape after filling of sealant as per the method specified by the manufacture complete all as specified and directed.

M&L for preparing old decorated steel surfaces over 10 cm width or girth and applying one coat of synthetic enamel paint complete all as directed.

Note:- All the above works to be carried out upto 25.0 mtr height from the G.L. with necessary saftey measures and in patch work in different loacations. The contractor are adviced to keep this aspect in mind while quoting the rates in the tender.